Mount-It! Under Desk Keyboard Tray, Adjustable Keyboard and Mouse Drawer Platform With Ergonomic Wrist Rest Pad, 17.25" Track (MI-7137) Mount-It! Under Desk Keyboard Tray saves you space and helps improve ergonomics at your desk. Maximize your workplace comfort and productivity while getting the support you need. Correct wrist and typing posture is essential to preventing carpal tunnel. Height and tilt angle adjustment features of our keyboard tray allows you to position your elbows and wrists at the optimum height and angle. The tray positions your keyboard and mouse lower and closer to your body, allowing you to adopt and maintain a neutral working posture. Position adjustment is easy. Simple turn of the knob adjusts the tilt angle (negative, neutral or positive position) and the height (up to 5.5 inches of total height adjustment). Re-tighten the knob to lock the position. Just pull or push the plate to adjust the position of the tray. It comes with a gel wrist rest pad to reduce wrist soreness while typing and using the mouse, as well as to ensure correct typing angle. Mouse platform comes with a mouse pad with wrist rest. Saves valuable space by stowing under desk when not in use, slides out when needed. Track and arm are made from high-strength steel. Repositionable mouse platform can be installed either on left or right side of the keyboard platform. The swivel angle of the mouse platform is also adjustable for increased comfort. Features and Specifications: Keyboard tray measures 20.5 inched wide and 11 inches deep and can accommodate all types of keyboards. The dedicated mouse pad is 7 inches wide by 9.25 inches deep. 5.5 Inch height adjustment. Track size: 17.25 inch long and 5.5 inch wide Quality materials for stability and durability. Simple assembly. Hardware provided for mounting to a desk.